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Weather & Climate in Monarch Mill, SC
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Monarch Mill enjoys a temperate climate with an average annual temperature of 62°F (17°C). Winters average 43°F in January while summers reach 80°F in July. The area gets 310 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 44.6 inches. The area receives 2.9 inches of snow annually. Air quality is rated Good with a median AQI of 43. The city sits at an elevation of 481 feet.
Temperature
43°F Jan (6°C)
80°F Jul (27°C)
| Annual Average | 61.7°F |
| 14% above US avg | |
| January Average | 43°F (6°C) |
| July Average | 80°F (27°C) |
| Sunny Days | 310 days/yr |
Geography
| Elevation | 481 ft (147 m) |
| Area | 5.6 sq mi (14.5 km²) |
| Population Density | 327/sq mi |
| Coordinates | 34.7161°N, 81.5848°W |
| Timezone | America/New_York |
| County | Union County County |
| Nearest Airport | Greenville Spartanburg International (GSP) 38 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 58.2 / 100 |
| Social Vulnerability | 95.6 / 100 |
| Community Resilience | 40.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively High |
| Ice Storm | Relatively High |
| Drought | Very Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
46 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.1.
| Feb 15, 2014 | 12 km ENE of Parksville, South Carolina | M4.1 | 110 km | 5 km |
| Apr 13, 1998 | 9 km S of Kershaw, South Carolina | M3.9 | 94 km | 7 km |
| Jun 29, 2022 | 6 km E of Elgin, South Carolina | M3.6 | 100 km | 3 km |
| Jun 29, 2022 | 6 km E of Elgin, South Carolina | M3.5 | 100 km | 3 km |
| Jun 26, 2022 | 6 km E of Elgin, South Carolina | M3.4 | 100 km | 4 km |
| Jan 3, 1992 | 4 km ENE of Willington, South Carolina | M3.4 | 112 km | 3 km |
| May 9, 2022 | 5 km ESE of Elgin, South Carolina | M3.3 | 100 km | 4 km |
| Jun 5, 1998 | 4 km SSE of Mooresville, North Carolina | M3.2 | 118 km | 9 km |
| Jun 20, 2017 | 6 km SW of Augusta, Georgia | M3.2 | 149 km | 13 km |
| Aug 8, 1993 | 12 km ENE of Aiken, South Carolina | M3.2 | 124 km | 9 km |
| Aug 23, 2025 | 3 km N of Coronaca, South Carolina | M3.0 | 67 km | 2 km |
| Aug 4, 2007 | 12 km ENE of Lake Lure, North Carolina | M3.0 | 97 km | 9 km |
| Jan 1, 1993 | 4 km SSW of Spruce Pine, North Carolina | M3.0 | 137 km | 2 km |
| Feb 16, 2014 | 13 km WNW of Edgefield, South Carolina | M3.0 | 108 km | 7 km |
| Feb 18, 2005 | 7 km ENE of Irmo, South Carolina | M2.9 | 79 km | 1 km |
| Aug 23, 2025 | 3 km NNW of Coronaca, South Carolina | M2.9 | 68 km | 7 km |
| Sep 18, 1996 | 6 km E of Clarks Hill, South Carolina | M2.8 | 125 km | 14 km |
| Mar 6, 2006 | 3 km W of Burnsville, North Carolina | M2.8 | 150 km | 4 km |
| Apr 26, 2013 | 9 km E of Lincolnton, Georgia | M2.8 | 127 km | 12 km |
| May 10, 2022 | 5 km E of Elgin, South Carolina | M2.8 | 99 km | 2 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
8 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2022 | Ian | Category 1 | 81 mph | 270 km |
| 2020 | Isaias | Category 1 | 92 mph | 298 km |
| 2016 | Matthew | Category 2 | 98 mph | 271 km |
| 2004 | Charley | Category 1 | 81 mph | 272 km |
| 2004 | Gaston | Category 1 | 75 mph | 265 km |
| 1996 | Fran | Category 1 | 75 mph | 268 km |
| 1989 | Hugo | Category 4 | 138 mph | 44 km |
| 1985 | Bob | Category 1 | 75 mph | 297 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
473 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 32 fatalities, 724 injuries.
| Date | Rating | Distance | Path | Fatalities |
| May 5, 1989 | EF4 | 83 km | 13.0 mi | 1 |
| May 5, 1989 | EF4 | 51 km | 15.0 mi | 2 |
| May 5, 1989 | EF4 | 84 km | 14.0 mi | 4 |
| Mar 28, 1984 | EF4 | 90 km | 4.0 mi | 0 |
| Mar 28, 1984 | EF4 | 46 km | 21.0 mi | 5 |
| Dec 13, 1973 | EF4 | 72 km | 1.0 mi | 2 |
| Apr 8, 1957 | EF4 | 92 km | 121.4 mi | 4 |
| Mar 15, 2008 | EF3 | 56 km | 27.5 mi | 0 |
| Aug 16, 1994 | EF3 | 93 km | 8.0 mi | 0 |
| Aug 16, 1994 | EF3 | 11 km | 30.0 mi | 0 |
| Aug 16, 1994 | EF3 | 94 km | 0.3 mi | 0 |
| Mar 27, 1994 | EF3 | 67 km | 18.5 mi | 0 |
| Oct 18, 1990 | EF3 | 88 km | 12.0 mi | 0 |
| Mar 28, 1984 | EF3 | 47 km | 19.0 mi | 0 |
| Dec 13, 1973 | EF3 | 73 km | 10.7 mi | 0 |
| Dec 13, 1973 | EF3 | 84 km | 17.7 mi | 0 |
| Dec 13, 1973 | EF3 | 59 km | 17.3 mi | 1 |
| May 27, 1973 | EF3 | 78 km | 60.2 mi | 0 |
| May 10, 1952 | EF3 | 62 km | 22.7 mi | 2 |
| May 5, 2020 | EF2 | 53 km | 14.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: BURNING UNIT (5,567 acres, 2010).
| Year | Name | Acres Burned | Distance |
| 2010 | BURNING UNIT | 5,567 | 14 km |
| 2010 | C-94-95 133 RX | 3,192 | 29 km |
| 2010 | UNNAMED | 2,909 | 31 km |
| 2015 | UNNAMED | 2,690 | 25 km |
| 2017 | UNNAMED | 2,514 | 26 km |
| 2009 | UNNAMED | 2,458 | 26 km |
| 2017 | UNNAMED | 2,395 | 15 km |
| 2017 | UNNAMED | 2,362 | 14 km |
| 2013 | UNNAMED | 2,274 | 25 km |
| 2013 | UNNAMED | 2,237 | 26 km |
| 2010 | C-142 RX | 2,149 | 33 km |
| 2021 | UNNAMED | 2,024 | 18 km |
| 2019 | UNNAMED | 2,000 | 24 km |
| 2016 | UNNAMED | 1,964 | 15 km |
| 2009 | UNNAMED | 1,918 | 12 km |
| 2013 | UNNAMED | 1,897 | 37 km |
| 2014 | UNNAMED | 1,879 | 33 km |
| 2018 | C-140 EN | 1,860 | 12 km |
| 2016 | TOMBSTONE | 1,747 | 93 km |
| 2013 | UNNAMED | 1,746 | 12 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 43°F (6°C) | 4.5 in | Coldest |
| February | 45°F (7°C) | 4.1 in | |
| March | 52°F (11°C) | 5.0 in | Wettest |
| April | 60°F (16°C) | 3.2 in | Driest |
| May | 68°F (20°C) | 3.7 in | |
| June | 75°F (24°C) | 4.1 in | |
| July | 80°F (27°C) | 4.1 in | Warmest |
| August | 78°F (25°C) | 4.3 in | |
| September | 72°F (22°C) | 4.1 in | |
| October | 61°F (16°C) | 3.8 in | |
| November | 51°F (11°C) | 3.5 in | |
| December | 44°F (6°C) | 3.7 in |
Monarch Mill has a seasonal temperature swing of 37°F / from 43°F in January to 80°F in July. Total annual precipitation is 47.9 inches, with March being the wettest month (5.0") and April the driest (3.2").